CN102944111A - Chute body head structure of rotary kiln tail - Google Patents
Chute body head structure of rotary kiln tail Download PDFInfo
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- CN102944111A CN102944111A CN2012103873049A CN201210387304A CN102944111A CN 102944111 A CN102944111 A CN 102944111A CN 2012103873049 A CN2012103873049 A CN 2012103873049A CN 201210387304 A CN201210387304 A CN 201210387304A CN 102944111 A CN102944111 A CN 102944111A
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- chute body
- body head
- break iron
- back iron
- rotary kiln
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Abstract
The invention discloses a chute body head structure of a rotary kiln tail. A triangular rib plate is arranged on a chute body; chute body mounting holes are arranged in the triangular rib plate; a back iron of the chute body head is arranged at the chute body head structure; a back iron bottom plate and a back iron connecting plate are arranged on the chute body head structure; back iron mounting holes are arranged in the back iron connecting plate; the back iron connecting plate is close up the triangular rib plate; the chute body mounting holes can be aligned with the back iron mounting holes for bolts to pass through, and nuts can be used to firmly connect the back iron connecting plate with the triangular rib plate. By virtue of the technical scheme, the effect in the actual production is ideal; the refractory castable is protected and prevented largely from dropping; the service life of the refractory castable in the chute is prolonged; the damage rate of the chute body head is reduced; the service life of the chute body head is prolonged by 2 to 3 times; the halt time is reduced; furthermore, the use cost of the refractory castable is reduced; the pelletizing production is promoted; and at the same time, the frequency of replacing the chute body is reduced.
Description
Technical field
The invention belongs to the technical field that metallurgical industry is produced, relate to pelletizing production technology wherein, more particularly, the present invention relates to a kind of rotary kiln chute body head construction.
Background technology
Pellet chain combing machines---be provided with three arc chute body components between the rotary kiln, install the semicircle chute of rear formation, and along stamping the thick castable of 200mm on the inboard cambered surface, the effect of the semicircle chute of three arc chute bodies is preheated pelletizing can successfully be delivered to carry out roasting in the rotary kiln.
When chute body anterior (being chute body head) is in for a long time in 1000 ℃ of high temperature gas flows and burns and bear washing away of dust, head castable refractory loose or dislocation, make the chute body of head exposed, pellet in the roasting directly touches outside metal position, make its oxidation, cracking, distortion even local shedding, cause Lou material.
Above-mentioned condition causes approximately 3 years needs transducer sets more just of chute body, and example of the prior art shows: go into operation in December, 2010 from August, 2005, changed two covers, and a large amount of labour cost of needs, this causes direct economic loss to production.
Chute body anterior (that is: head) is 5 uniform triangle floors, fixing castable horizontal ribbed not between two floors, and the cutaway view middle front part is inclined-plane shape structure.
There is following shortcoming in rotary kiln chute body of the prior art:
Exist design defect local; the castable that this place is squeezed into generates the crack aborning and in the variation of scheduled overhaul anterior temperature difference when stopping machine; pour into again thin mineral aggregate in the crack; change the formation fragment toward compound expansion; under the effect of pelletizing mineral aggregate stream, naturally come off; chute body head has lost the protection of castable; be in for a long time and burn in 1000 ℃ of high temperature gas flows and the washing away of dust; chute body front portion forms exposed gradually; high temperature in the roasting and pellet directly touch the metal position of exposing; make its oxidation, cracking, distortion even local shedding, leak material.Again stamp castable by maintenance, after production a period of time, dropping situations still exists, and is difficult to solve the situation that comes off of pouring into a mould.
Castable is repaired, stamped to the castable of chute body head again in the scheduled overhaul.Castable came off after using a period of time again after secondary was repaired.Back and forth, the chute body well damage of head can't be repaired breakage.Use possible cause damage of equipment if continue.If the chute body castable to head is changed, then need 3～5 days long-time stop production to overhaul.Change approximately 9～10 tons in material of once-cast (5500 yuan/tons).
Summary of the invention
The invention provides a kind of rotary kiln chute body head construction, its objective is that protection chute body head reaches fixedly castable refractory, prolongs its service life.
To achieve these goals, the technical scheme taked of the present invention is:
Rotary kiln chute body head construction provided by the present invention is established the triangle gusset on the described chute body, establishes chute body installing hole on the described triangle gusset; Described chute body head construction is established chute body head break iron, establishes break iron base plate, break iron connecting plate on the described chute body head break iron; Establish the break iron installing hole at described break iron connecting plate; Described break iron connecting plate and triangle gusset are close to, and described chute body installing hole is aimed at the break iron installing hole, after then passing with bolt, with nut break iron connecting plate and triangle gusset are fastenedly connected again.
Described chute body head break iron is established the break iron reinforcement, and described break iron reinforcement is the bulge-structure at described break iron base plate.
Between described chute body and chute body head break iron, it is castable refractory.
The material of described chute body is ZG3Cr25Ni20.
The material of described chute body head break iron is ZG3Cr25Ni20.
The present invention adopts technique scheme, and the effect in production and application is ideal, and the protection castable refractory comes off its minimizing, prolongs the service life of castable refractory in the chute; Chute body head rate of decay is slowed down, and making to increase by 2～3 times its service life; Not only reduced the shutdown number of times, also reduced the cost of use of castable refractory, positive role has been played in the production of pelletizing, simultaneously, reduced and change the chute body frequency.
Description of drawings
The below is briefly described the expressed content of each width of cloth accompanying drawing of this specification and the mark among the figure:
Fig. 1 is the structural representation of chute body among the present invention;
Fig. 2 be among Fig. 1 C-C to structural representation;
Fig. 3 is the schematic top plan view of structure shown in Figure 1;
Fig. 4 is the stereogram of the chute body head break iron among the present invention;
Fig. 5 is the structural representation of the chute body head break iron among Fig. 4;
Fig. 6 is the schematic top plan view of structure shown in Figure 5.
Be labeled as among the figure:
1, chute body, 2, the triangle gusset, 3, chute body installing hole, 4, chute body head break iron, 5, the break iron base plate, 6, the break iron connecting plate, 7, the break iron reinforcement, 8, the break iron installing hole.
The specific embodiment
The below contrasts accompanying drawing, and the description by to embodiment is described in further detail the specific embodiment of the present invention, to help those skilled in the art inventive concept of the present invention, technical scheme is had more complete, accurate and deep understanding.
The of the present invention structure expressed such as Fig. 1 to Fig. 6 is a kind of rotary kiln chute body head construction.As shown in Figure 1 to Figure 3, establish triangle gusset 2 on the described chute body 1.
In order to solve the problem that prior art exists and to overcome its defective, realize protection chute body head and fixing castable refractory, the goal of the invention that prolongs its service life, the technical scheme that the present invention takes is:
To shown in Figure 6, rotary kiln chute body head construction provided by the present invention is established chute body installing hole 3 on the described triangle gusset 2 such as Fig. 1; Described chute body head construction is established chute body head break iron 4, establishes break iron base plate 5, break iron connecting plate 6 on the described chute body head break iron 4; Establish break iron installing hole 8 at described break iron connecting plate 6; Described break iron connecting plate 6 is close to triangle gusset 2, and described chute body installing hole 3 is aimed at break iron installing hole 8, after then passing with bolt, with nut break iron connecting plate 6 and triangle gusset 2 is fastenedly connected again.
When design rotary kiln chute body 1, a cover chute body head break iron 4 has been installed in the head increase of chute body 1, this chute body head break iron 4 can singly only be changed; Chute body head break iron 4 is protecting the head of semicircle chute body 1 to reach fixedly castable refractory, prolongs its service life.
During design chute body, only dimensional requirement is changed by design by head triangle gusset 2 places, reserve chute body installing hole 3.According to chute body 1 high temperature industrial and mineral environment and the characteristic such as easy cracking of head castable refractory of chute body 1, loose or dislocation; adopt with chute body 1 and design, can protect the not too fast damage of chute body 1 head with material, can fix again the square break iron of castable refractory.
If add tungsten in the material of chute body head break iron 4, add molybdenum and again improve, life cycle can further prolong.
Described chute body head break iron 4 is established break iron reinforcement 7, and described break iron reinforcement 7 is the bulge-structures at described break iron base plate 5.
This bulge-structure plays the fixedly effect of refractory material better.
Between described chute body 1 and chute body head break iron 4, it is castable refractory.
The material of described chute body 1 is ZG3Cr25Ni20.
The material of described chute body head break iron 4 is ZG3Cr25Ni20.
Mounting means of the present invention:
1, a whole set of replacing:
When chute body 1 is changed in overhaul, until chute body 1 change complete after, break castable refractory before, with the heat resisting steel bolt chute body head break iron 4 is fixed on the chute body installing hole 3 of chute body 1 reservation.
2, the replacing of localized mass (damage):
Utilize in the scheduled overhaul, the castable at the set bolt place, chute body head break iron 4 rear that needs are changed is chiseled, and cuts off bolt, again changes chute body head break iron 4, and the complement castable refractory gets final product.
Behind the production and application, effect is ideal.After the transformation, castable no longer comes off, and has greatly prolonged the service life of castable refractory in the chute, and chute body 1 head rate of decay is slowed down, and making increases by 2～3 times its service life.The castable refractory result of use is fairly good, has not only reduced the shutdown number of times, has also reduced the cost of use of castable refractory, and positive role has been played in the production of pelletizing, simultaneously, reduces and changes the chute body frequency.
The Economic Benefit Accounting that the present invention produces:
Rotary kiln chute body 1: material: ZG3Cr25Ni20; Weight: 860.2kg/ piece, quantity: 3/cover; Purchasing price is 58 yuan/kg; Add up to: 149674 yuan/cover;
Approximately 9 tons of castable refractories, add up to: 49500 yuan by 5500 yuan per ton;
Change approximately 12000 yuan of chute body labour costs;
The chute body head break iron 4 of rotary kiln chute body head: material: ZG3Cr25Ni20; Weight: 15.3kg/, quantity: 15/cover; Purchasing price is 58 yuan/kg; Add up to: 13311 yuan/cover;
Bolt: material: ZG3Cr25Ni20; Quantity: 15/cover; Weight: 1.3KG/ only; Purchasing price is 78 yuan/; Meter: 1170 yuan/cover; 14481 yuan/cover of Amount in Total.
Comprehensive above data draw: chute body of minimizing replacing can be saved total expense and be about: 149674 yuan/cover of chute body; 49500 yuan of castables; 12000 yuan of labour costs; 14481 yuan/cover of break iron; 149674+49500+12000-14481=199033 unit.
Reach a conclusion from above-mentioned technology and Economic and Efficiency Analysis: the present invention has obtained significant economic benefit and technological progress.
The above has carried out exemplary description to the present invention by reference to the accompanying drawings; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or without improving design of the present invention and technical scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (5)
1. a rotary kiln chute body head construction is established triangle gusset (2) on the described chute body (1), it is characterized in that: establish chute body installing hole (3) on the described triangle gusset (2); Described chute body head construction is established chute body head break iron (4), establishes break iron base plate (5), break iron connecting plate (6) on the described chute body head break iron (4); Establish break iron installing hole (8) at described break iron connecting plate (6); Described break iron connecting plate (6) is close to triangle gusset (2), and described chute body installing hole (3) is aimed at break iron installing hole (8), after then passing with bolt, with nut break iron connecting plate (6) and triangle gusset (2) is fastenedly connected again.
2. according to rotary kiln chute body head construction claimed in claim 1, it is characterized in that: described chute body head break iron (4) is established break iron reinforcement (7), and described break iron reinforcement (7) is the bulge-structure at described break iron base plate (5).
3. according to rotary kiln chute body head construction claimed in claim 1, it is characterized in that: between described chute body (1) and chute body head break iron (4), be castable refractory.
4. according to rotary kiln chute body head construction claimed in claim 1, it is characterized in that: the material of described chute body (1) is ZG3Cr25Ni20.
5. according to rotary kiln chute body head construction claimed in claim 1, it is characterized in that: the material of described chute body head break iron (4) is ZG3Cr25Ni20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210387304.9A CN102944111B (en) | 2012-10-12 | 2012-10-12 | Chute body head structure of rotary kiln tail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210387304.9A CN102944111B (en) | 2012-10-12 | 2012-10-12 | Chute body head structure of rotary kiln tail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102944111A true CN102944111A (en) | 2013-02-27 |
| CN102944111B CN102944111B (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210387304.9A Active CN102944111B (en) | 2012-10-12 | 2012-10-12 | Chute body head structure of rotary kiln tail |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001280852A (en) * | 2000-03-30 | 2001-10-10 | Sumitomo Heavy Ind Ltd | Rotary kiln |
| CN201155921Y (en) * | 2007-12-17 | 2008-11-26 | 中冶焦耐工程技术有限公司 | Novel structure rotary kiln nozzle for feeding material |
| CN101975516A (en) * | 2010-12-01 | 2011-02-16 | 中冶北方工程技术有限公司 | Safety chute for feed hopper of pellet forced draft circular cooler |
| CN202024595U (en) * | 2011-04-12 | 2011-11-02 | 北京凯盛建材工程有限公司 | Easy-built, easy-assembled and easy-disassembled feeding device of rotary kiln |
| CN102538473A (en) * | 2012-03-12 | 2012-07-04 | 新兴能源装备股份有限公司 | Air-cooled transfer chute of oxidized pellet chain-grate machine |
| CN202371995U (en) * | 2011-11-08 | 2012-08-08 | 中信重工机械股份有限公司 | Discharging chute device for rotary kiln |
| CN202938628U (en) * | 2012-10-12 | 2013-05-15 | 芜湖新兴铸管有限责任公司 | Head structure of rotary kiln tail chute body |
-
2012
- 2012-10-12 CN CN201210387304.9A patent/CN102944111B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001280852A (en) * | 2000-03-30 | 2001-10-10 | Sumitomo Heavy Ind Ltd | Rotary kiln |
| CN201155921Y (en) * | 2007-12-17 | 2008-11-26 | 中冶焦耐工程技术有限公司 | Novel structure rotary kiln nozzle for feeding material |
| CN101975516A (en) * | 2010-12-01 | 2011-02-16 | 中冶北方工程技术有限公司 | Safety chute for feed hopper of pellet forced draft circular cooler |
| CN202024595U (en) * | 2011-04-12 | 2011-11-02 | 北京凯盛建材工程有限公司 | Easy-built, easy-assembled and easy-disassembled feeding device of rotary kiln |
| CN202371995U (en) * | 2011-11-08 | 2012-08-08 | 中信重工机械股份有限公司 | Discharging chute device for rotary kiln |
| CN102538473A (en) * | 2012-03-12 | 2012-07-04 | 新兴能源装备股份有限公司 | Air-cooled transfer chute of oxidized pellet chain-grate machine |
| CN202938628U (en) * | 2012-10-12 | 2013-05-15 | 芜湖新兴铸管有限责任公司 | Head structure of rotary kiln tail chute body |
Non-Patent Citations (3)
| Title |
|---|
| 刘明红: "窑尾下料溜槽的改进", 《水泥》 * |
| 梁亚刚等: "石灰回转窑窑尾溜槽设备改造", 《重型机械》 * |
| 牟典江,迟茹强: "链篦机-回转窑窑尾溜槽的改造与应用", 《新疆有色金属》 * |
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|---|---|
| CN102944111B (en) | 2015-01-28 |
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